Ball, Sandra et all. <br/><br/>
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Sandra et all Ball 
 - ed. 
 - [S.l.]  Scholastic Canada Ltda  2005 
 - Pan Canadian Science Place Team .
 - Pan Canadian Science Place Team .
<br/><br/><label>ISBN: </label>0779146743 
<br/><br/><label>Dewey Class. No.: </label>P Year 5 [E]